you may wish to look for any articles one Pat Cash and his rehab provided by Jenny McConnell. She uselarge amounts of dynamic EMG traingin suring his tennis comeback in the mid 90's (following knee problems). Static training is a great start but I have found combined leg press with emg, moving to jumping etc is a great way forward. Currently we combine it with leg work on a Pilates Reformer bed to get functioal movement early without the load. :-)